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Finding the Fourth Proportional to 121,615.48, 167,829.88 and 67,897.36

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Solution

The fourth proportional to 121,615.48, 167,829.88 and 67,897.36 is: 93,698.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,615.48 : 167,829.88 = 67,897.36 : x
  2. Step 2: Convert to fraction form
    121,615.48/167,829.88 = 67,897.36/x
  3. Step 3: Cross multiply
    121,615.48x = 167,829.88 × 67,897.36
  4. Step 4: Simplify right side
    121,615.48x = 11,395,205,781.12
  5. Step 5: Solve for x
    x = 11,395,205,781.12/121,615.48
  6. Step 6: Final answer
    x = 93,698.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.